Comments (1)
rfindler
commented on July 19, 2024
I think what's happening here is that define-judgment-form is smart enough to tell that this judgment form never produces an 'e' without getting tripped up by the ellipses. When I make modifications to it that cause the #:satisfying query to actually be non-empty, it always gets the error.
For example, if you try the judgment form below, it finds counterexamples.
#lang racket
(require redex/reduction-semantics)
(define-language simple-plus
(M (any))
(e natural))
(define-judgment-form simple-plus
#:mode (okay1 I I)
[
--------------------------
(okay1 any_1 (any_2 ...))])
(define-judgment-form simple-plus
#:mode (okay I)
[(okay1 M ())
--------
(okay M)]
[--------
(okay 1)])
(redex-check simple-plus
#:satisfying (okay e)
(= 2 (term e)))
from redex.
Related Issues (20)
- Defining mutually recursvie judgments/meta-functions HOT 2
- Feature request: tag-with-names for apply-reduction-relation* HOT 2
- test-->>∃ #:steps n passes test if n > than the number of actual reduction steps for a term. HOT 4
- `traces` doesn't draw arrows after "fix layout" HOT 5
- `stepper` doesn't display whole term... unless I *narrow* its box?
- Feature Request: `stepper` with judgment-form use rule names
- Feature request: adjust font for `stepper` HOT 3
- Redex rejects literals at different ellipsis depths in binding form declarations HOT 1
- Generating random expressions sometimes results in an infinite loop
- where/error failures give no information about source of error HOT 6
- where/error failures don't tell you what failed to match
- using judgment-holds within define-relation HOT 1
- Redex's reduction graph windows sneakily hide part of term reductions HOT 1
- where/error doesn't report errors sometimes HOT 8
- define-metafunction does not check type signature on LHS HOT 3
- Docs missing a word I can't fill in. HOT 1
- `derivation/ps` always causes an error by calling a non-existent method HOT 1
- Default rendering font changed between Racket v8.8 and v8.9? HOT 4
- Redex PDF output contains a wrong font, while Racket REPL renders the correct font HOT 2
- Reduce space between rendered rules of a judgement form HOT 3
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from redex.